>>> I'm testing this USB 3.0 bus-powered hard drive: >>> >>> http://www.amazon.com/gp/product/B0041OSQ9S >>> >>> and I get: >>> >>> # hdparm -tT /dev/sdb >>> /dev/sdb: >>> Timing cached reads: 8006 MB in 2.00 seconds = 4004.33 MB/sec >>> Timing buffered disk reads: 252 MB in 3.01 seconds = 83.63 MB/sec >>> >>> # hdparm -tT /dev/sdb >>> /dev/sdb: >>> Timing cached reads: 8230 MB in 2.00 seconds = 4116.54 MB/sec >>> Timing buffered disk reads: 252 MB in 3.02 seconds = 83.55 MB/sec >>> >>> # hdparm -tT /dev/sdb >>> /dev/sdb: >>> Timing cached reads: 8446 MB in 2.00 seconds = 4224.36 MB/sec >>> Timing buffered disk reads: 230 MB in 3.02 seconds = 76.28 MB/sec >>> >>> Wikipedia says USB 3.0 has transmission speeds of up to 5 Gbit/s. >>> Doesn't MB/sec denote mega*bytes* per second? >> What usb3 is supported by Linux? Is it a pci card? > > I'm on 2.6.39-hardened-r10 and I'm using this motherboard with onboard USB > 3.0: > > http://www.newegg.com/Product/Product.aspx?Item=N82E16813128490
Just thought I'd mention that one of my USB 3.0 ports works and the other doesn't. The non-working port lights up the USB drive but the drive isn't picked up by the system in dmesg at all. I don't know if this is a hardware or software issue. - Grant > > - Grant
